
控制变数
Authored by 刘老师 undefined
Science
5th Grade
Used 5+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
"泽麒进行了一项与化学性质有关的实验。他使用石蕊试纸在不同种类的液体进行测试,并记录石蕊试纸的颜色变化。"
这个说明的操纵性变数是?
种类的液体
液体的种类
石蕊试纸的颜色变化
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这个实验的操纵性变数是“纸条的种类”。
我们如何控制操纵性变数?
使用不同的纸条进行实验
使用相同的纸条进行实验
在3分钟后观察纸条颜色水的高度
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这个实验的固定性变数是?
无水氯化钙的存在
铁钉的种类
油的存在
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这个实验的操纵性变数是?
橡皮筋动力船移动的距离
动力船的大小
扭转螺旋桨的圈数
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
"子乐进行了一项与吸水能力有关的实验。他准备了3个量杯,并倒入200ml的水。然后,他把不同的材料放入量杯,静置1分钟。1分钟后,他把材料取出,并记录量杯里剩下的水的体积。"
这个说明的反应性变数是?
实验前,量杯水的体积
材料的种类
量杯里剩下的水的体积
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这个实验的操纵性变数是?
油的分量
水的体积
灯芯由燃烧至熄灭所需的时间
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